Senior/Staff Engineer, Platform Efficiency & Tools

OKX; Singapore; On-site; SGD 70,000 - 100,000; Full time

Job summary

A digital asset exchange company in Singapore is looking for a backend developer to optimize message delivery systems. The ideal candidate has strong Java skills, familiarity with distributed systems and middleware, and an agile mindset. Responsibilities include coordinating backend requirements and ensuring system reliability. The company offers competitive compensation and various employee benefits.

Benefits

Competitive total compensation package

L&D programs and education subsidy

Team building programs

Wellness and meal allowances

Comprehensive healthcare schemes

Qualifications

• Solid foundation in Java with understanding of JVM optimizations.
• Familiarity with middleware and distributed system principles.
• Experience with system performance optimization and design.

Responsibilities

• Coordinate backend requirements and technical design for message delivery.
• Optimize system performance and ensure reliability.
• Identify service optimization points to enhance engineering productivity.

Skills

Java

JVM optimization

Distributed systems

Logical thinking

Communication skills

Tools

MySQL

MQ

RPC

Caching

Message queues

Job description

OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa

Who Are We

At OKX, we believe the future will be reshaped by technology. Founded in 2017, we are revolutionising world systems through our cutting‑edge digital asset exchange, Web3 portal and blockchain ecosystems. We reshape the financial ecosystem by offering some of the most diverse and sophisticated products, solutions, and trading tools on the market. Trusted by more than 50 million users in over 180 countries globally, OKX empowers every individual to explore the world of Web3. With our extensive range of products and services, and unwavering commitment to innovation, OKX envisions a world of financial access backed by blockchain and the power of decentralized finance.

We are innovative in the way we think, work, and in the products we create. We are also socially responsible by actively participating and encouraging employees to take part in various public welfare activities. With more than 3,000 employees around the world, we believe embracing diversity and inclusion will spark the creation of long‑term value for the industry. Come Build the Future with Us now!

About the team

The platform tool team is mainly responsible for providing infrastructure support to various vertical teams within OKX. This support includes message‑sending ability (email/push notification/SMS), notification center and verification code, etc. Our goal is to help vertical tech teams reduce duplicated work and improve their efficiency in development.

What You'll Be Doing

• Responsible for coordinating the backend requirements, technical design, and development of the message delivery business.
• Responsible for system performance optimization, technical problem-solving, ensuring high availability, reliability, and performance requirements.
• Possess architectural design skills with the ability to identify service optimization points to enhance engineering productivity.
• Familiar with business and product requirements, capable of completing functional design, architectural optimization, and development tasks.

What We Look For In You

• Possess a solid foundation in Java, with in-depth understanding of JVM configuration optimization strategies, tuning, IO, multi‑threading, concurrent frameworks, common data structures, algorithms, and design patterns. Additionally, demonstrate good programming practices and rich work experience.
• Familiar with common middleware such as MQ, RPC, caching, message queues, and MySQL.
• In-depth understanding of distributed system principles, including CAP theorem, consistency, idempotent operations, etc.
• Clear logical thinking, agile mindset, and excellent communication skills.
• Previous experience in team management or design of complex systems is a plus.
• Preferred experience in integrating and developing platforms for email, SMS, push notifications, etc.
• Bilingual is highly preferred (Mandarin and English) as the team will be working with stakeholders in different regions.

Perks & Benefits

• Competitive total compensation package
• L&D programs and Education subsidy for employees' growth and development
• Various team building programs and company events
• Wellness and meal allowances
• Comprehensive healthcare schemes for employees and dependants
• More that we love to tell you along the process!